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Physics Past Questions v35 for (JAMB/WAEC/NECO)

Physics Past Questions v35 For (JAMB/WAEC/NECO); These Physics past questions are for students who are sitting for the following examinations


  • JAMB
  • Post-UTME / Post-JAMB
  • WAEC
  • NECO

Physics Past Questions v35 For (JAMB/WAEC/NECO)


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#1. A radioactive substance has a half life of 20 days. What fraction of the original radioactive nuclei will remain after 80 days?

#2. A conductor has a diameter of 1.00mm and length of 2.00m. If the resistance of the material is 0.1Ω, the resistivity is

#3. The instrument that measures both ac and dc is called

#4. If two charged plates are maintained at a potential difference of 3 kv, the work done in taking a charge of 600µc across the field is

#5. An engine of a car of power 80 kW moves on a rough road with a velocity of 32 ms-1. The forces required to bring it to rest is

#6. A progressive wave equation is represented by y = a sin(150 πt - πx/4). if the phase difference of a progressive wave is 45°, the value of x in the equation is

#7. The frequency of the wave in the diagram above is

#8. In the diagram above, the pressure of the gas is

#9. A mirror of weight 75N is hung by a cord from a hook on the wall. If the cord makes an angle of 30o with horizontal, the tension in the cord is

#10. In a gas experiment, if the volume of the gas is plotted against the reciprocal of the pressure, the unit of the slope of the resulting curve is

#11. A shooter wants to fire a bullet in such a way that its horizontal range is equal to three times its maximum height. At the what angle should he fire the bullet to achieve this?

#12. The diagram above represents the stress-strain graph for a typical metal rod. What does the X represent?

#13. An object placed 10cm from a concave mirror of focal length 5cm would have its image

#14. A submarine is observed to rise from a real depth off 80 m to 60 m in water. calculate the change in apparent depth. [Refraction index of water (4)/3]

#15. Non-luminous object can be seen because they

#16. The wavelength of the first overtone of a note in a closed pipe of length 33 cm is?

#17. A person can focus objects when they lie beyond 75 cm from his eyes. The focal length of the lens required to reduce his least distance of distinct vision to 25 cm is?

#18. A radioactive element has a half life of 4 days. The fraction that has decayed in 16 days is?

#19. The theory of electronic conduction in solids, which satisfactorily explains the properties of conductors, insulators and semi-conductor,is?

#20. I. The number of neutrons released exceeds the number that caused the fission. II. There is loss of mass. III. Energy is produced. IV. Smaller nuclei merge to form larger nuclei Which of the statement above are correct about nuclear fission?

#21. A certain manufacturer wishes to make an n-type semiconductor. Which materials would he select for doping?

#22. A p-n junction diode is used as?

#23. I. Work done by load is always less than the work done by effort. II. All machines are made of levers, pulleys, screws and gear wheels. III. A fishing rod is a machine. Iv. Effort is always larger than load. which of statements above about machines are true?

#24. The energy associated with the emitted photon when a mercury atom changes from one state to another is 3.3 ev. calculate the frequency of the photon. [e = 1.6 x 10-19c; h = 6.6 x 10-13js]

#25. The process through which free electrons leave the surface of hot metal is known as?

#26. The battery connection that permits current to flow across a p-n junction is called?

#27. The motion of smoke particles from a chimney is typical of?

#28. In an experiment to determine terminal velocity, as the pressure increases, the viscosity off a liquid

#29. If the radius of the earth is 6.4 x 106m, the escape velocity of a satellite from the earth is? [g = 10 ms-2]

#30. The component of vector X along the direction of vector Y is zero when

#31. The correct unit of energy density is?

#32. When an a.c. voltage is applied to a capacitor, no power is consumed because the current

#33. The electrolyte in the Nickei-iron (Nife) accumulator is

#34. During electrolysis, 2.0 g of a metal is deposited using a current of 0.5 A in 3 hours. The mass of the same metal which can be deposited using a current of 1.5 A in 1 hour is?

#35. When a certain a.c supply is connected to a lamp, it lights with the same brightness as it does with a 12 V d.c battery. Then r.m.s value of the a.c supply is?

#36. An ammeter of resistance 5Ω has a full-scale deflection when a current of 50 mA flows in it. The value of the resistor required to adapt it to measure a current of 5 A is?

#37. A cell of internal resistance r is connected to an external resistor R. The conductor for maximum power transfer is?

#38. The production and type of charge of a body can only be accounted for by the?

#39. The main purpose of the transformer in an a.c radio set is to?

#40. An electric heater with a p.d of 240 V connected across its terminals has a total resistance of 960Ω. find the power rating of the heater.

#41. If the capacitance of an capacitor is C = (εA)/d, which of the following parameters is varied when a variable capacitors is used for tuning radio sets?

#42. The thermometric property of a constant volume thermometer is?

#43. An immersion heater rated 2.0A, 240V is used to boil water from temperature 52°c to 100°c. If the mass of the water is 2.5kg. determine the time taken to boil the water. [specific heat capacity of water = 4.2 x 103 jkg-1 k-1]

#44. The thermos flask is designed to?

#45. what is likely to happen if the glass of a thermometer expands more upon heating than the liquid inside?

#46. A drop of petrol makes a finger colder than a drop of water would because?

#47. A uniform solid cube material 10cm on each side of mass 700g is submerged in water. which of the following best described the behavior of the cube water?

#48. At low humidity in an environment, the human skin is usually?

#49. If the relative density of gold is 19.2, the volume of 2.4kg of gold is?


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